Properties of the Number 18245

Eighteen Thousand Two Hundred Forty-Five

Basics

Value: 18244 → 18245 → 18246

Parity: odd

Prime: No

Previous Prime: 18233

Next Prime: 18251

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 41 × 89

Divisors: 1, 5, 41, 89, 205, 445, 3649, 18245

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011101000101

Octal: 43505

Duodecimal: A685

Hexadecimal: 4745

Square: 332880025

Square Root: 135.07405376311175

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of odd semiprimes < 10ⁿ. Number of terms of A046315 < 10ⁿ. A85770

Primitive subsequence of A111105. A137559

Molien series of 4-dimensional representation of u.g.g.r. #9. A13977

Molien series of 4-dimensional representation of u.g.g.r. #8. A13978

Number of digits in A116534(n). A131059

Indices of records in A366092. A366093

Numbers whose base-5 representation contains exactly three 0's and three 4's. A45217

Number of permutations of length n which avoid the patterns 1234, 4123, 4132. A116769

Numbers k such that k, k+1, ..., k+5 all have 3 prime factors (counted with multiplicity). A375239

A self-generating sequence: there are a(n) (k+1)'s between successive k's, where k=4. A18245